Umkhiqizo
Isiphazamisi se-vacuum sekhabethe le-inflatable (132A)
Incazelo emfushane yomkhiqizo:
Ngo-1926, iqembu eliholwa yiRoyal Sorensen eCalifornia Institute of Technology laphenya ngokushintshwa kwe-vacuum futhi lahlola amadivaysi amaningana;izici ezibalulekile zokuphazamiseka kwe-arc ku-vacuum zaphenywa.USorenson wethula imiphumela emhlanganweni we-AIEE ngalowo nyaka, futhi wabikezela ukusetshenziswa kokuhweba kwamaswishi.Ngo-1927, uGeneral Electric wathenga amalungelo obunikazi futhi waqala ukuthuthukiswa kwezohwebo.Ukuwohloka Okukhulu Kwezomnotho kanye nokuthuthukiswa kwemishini yokushintsha uwoyela egcwele uwoyela kwabangela inkampani ukuba yehlise umsebenzi wokuthuthukiswa, futhi umsebenzi omncane obalulekile kwezohwebo wenziwa kumshini wokuvala amandla okuvala kuze kube ngawo-1950.
Ngo-1956, u-H. Cross washintsha ukushintsha kwe-vacuum vacuum switch yesekethe ephezulu futhi wakhiqiza i-vacuum switch enesilinganiso esingu-15 kV ngo-200 A. Eminyakeni emihlanu kamuva, u-Thomas H. Lee kwa-General Electric wakhiqiza ama-vacuum circuit breaker anesilinganiso esilinganiselwe. Amandla kagesi angu-15 kV kumaza okunqamuka kwesekethe engu-12.5 kA.Ngo-1966, amadivaysi athuthukiswa nge-voltage elinganiselwe ye-15 kV kanye nama-short-circuit breaking currents angu-25 no-31.5 kA.Ngemuva kweminyaka yawo-1970, amaswishi e-vacuum aqala ukushintsha ama-switch-oyela amancane ku-switchgear ephakathi nendawo.ekuqaleni kwawo-1980, amaswishi e-SF6 nama-breaker nawo kancane kancane athathelwa indawo ubuchwepheshe be-vacuum ekufakweni kwe-medium-voltage.
Kusukela ngo-2018, i-vacuum circuit breaker yayifinyelele ku-145 kV futhi i-breaking current isifinyelele ku-200 kA.
Isiphazamisi sevacuum se-Siemens esineminyaka engama-30
Oxhumana nabo baphatha i-circuit current uma ivaliwe, benze amatheminali e-arc uma evuliwe.Zenziwe ngezinto ezihlukahlukene, kuye ngokuthi isiphazamisi se-vacuum sisetshenziswa kanjani kanye nomklamo wempilo ende yokuxhumana, ukutholwa ngokushesha kwesilinganiso sokumelana nogesi, nokulawula ukugcwala ngokweqile ngenxa yokunqunywa kwamanje.
Indlela yokusebenza yangaphandle ishayela othintana naye ohambayo, ovula futhi avale isifunda esixhunyiwe.Isiphazamisi se-vacuum sihlanganisa umkhono oqondisayo wokulawula othintana naye onyakazayo futhi uvikele izimbongolo ezivalayo ekujikeni, okungafinyeza ukuphila kwaso kakhulu.
